It's also important to note that this manifesto is also a variant of the TimBL's Linked Data Design Issuesmeme re. Linked Data, but totally decoupled from RDF (data representation formats aspect) and SPARQL which -- in my world view -- remain implementation details.

Data 3.0 manifesto

An "Entity" is the "Referent" of an "Identifier."

An "Identifier" SHOULD provide a global, unambiguous, and unchanging (though it MAY be opaque!) "Name" for its "Referent".

A "Referent" MAY have many "Identifiers" (Names), but each "Identifier" MUST have only one "Referent".